TREA

Organically modified siloxanes and their use for producing preparations for water-repellent impregnations for mineral building materials

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Information

  • Patent Application
  • 20070190306
  • Publication Number
    20070190306
  • Date Filed
    February 12, 2007
    18 years ago
  • Date Published
    August 16, 2007
    17 years ago
Information
Abstract
The invention relates to organomodified siloxane compounds of the general formula (I)
Description
Claims
  • 1. An organomodified siloxane compound of the general formula (I)
  • 2. The compound as claimed in claim 1, wherein ≧90% of the radicals R1 are methyl groups and R2 is an alkylene radical having from 1 to 5 carbon atoms.
  • 3. The compound as claimed in claim 1, wherein R3 is a radical of the general formula (II) in which R3a is a methyl and/or ethyl radical and R6a, R6b are identical or different and are each hydrogen, methyl or ethyl.
  • 4. The compound as claimed in claim 1, wherein R3 is a radical of the general formula (II) in which R3a is a methyl and/or ethyl radical and R6a, R6b are identical or different and are each hydrogen, methyl or ethyl, with the proviso that at least one of the radicals is hydrogen.
  • 5. The compound as claimed in claim 1, wherein R3 is a radical of the general formula (II) in which the alkoxy radicals
  • 6. The compound as claimed in claim 1, wherein R4 is the radical —R2—Si(R5)3 in which R2 is an alkylene radical having from 1 to 5 carbon atoms and at least one radical R5 is a methoxy or ethoxy group.
  • 7. The compound as claimed in claim 1, wherein 1<na+nb≦15.
  • 8. The compound as claimed in claim 1, wherein n, m, o <5 and p=10 to 50, with the proviso that at least one SiH bond and at least one alkoxy group are present in the molecule.
  • 9. An aqueous preparation for the water-repellent impregnation of porous mineral building materials, which comprises a) from 10 to 80% by weight of compounds as claimed in claim 1,b) from 0.5 to 10% by weight of an emulsifier or emulsifier mixture,c) from 10 to 89.5% by weight of water and, if desired,d) from 0 to 0.5% by weight of preservative.
  • 10. The aqueous preparation of claim 9, wherein ≧90% of the radicals R1 are methyl groups and R2 is an alkylene radical having from 1 to 5 carbon atoms.
  • 11. The aqueous preparation of claim 9, wherein R3 is a radical of the general formula (II) in which R3a is a methyl and/or ethyl radical and R6a, R6b are identical or different and are each hydrogen, methyl or ethyl.
  • 12. The aqueous preparation of claim 9, wherein R3 is a radical of the general formula (II) in which R3a is a methyl and/or ethyl radical and R6a, R6b are identical or different and are each hydrogen, methyl or ethyl, with the proviso that at least one of the radicals is hydrogen.
  • 13. The aqueous preparation of claim 9, wherein R3 is a radical of the general formula (II) in which the alkoxy radicals
  • 14. The aqueous preparation of claim 9, wherein R4 is the radical —R2—Si(R5)3 in which R2 is an alkylene radical having from 1 to 5 carbon atoms and at least one radical R5 is a methoxy or ethoxy group.
  • 15. The aqueous preparation of claim 9, wherein 1<na+nb≦15.
  • 16. The aqueous preparation of claim 9, wherein n, m, o <5 and p=10 to 50, with the proviso that at least one SiH bond and at least one alkoxy group are present in the molecule.
  • 17. A method of providing a water-repellent surface for a porous mineral building material by impregnating a porous mineral building material with the aqueous preparation of claim 9.
Priority Claims (1)
Number Date Country Kind
10 2006 007 018.6 Feb 2006 DE national